Filigree Racer 

Artifact — Vehicle
When this Vehicle enters, you get {E}{E}{E}{E} (four energy counters).
Whenever this Vehicle attacks, you may pay {E}{E}. When you do, target instant or sorcery card in your graveyard gains jump-start until end of turn. (You may cast that card from your graveyard by discarding a card in addition to paying its other costs. Then exile it.)
Crew 1
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Cards that do something similar expected a card that isn't here?
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Aethersphere Harvester 86%
$0.18#13593
"When this Vehicle enters, you get {E}{E} ."
+1 more matching line
Smoldering Stagecoach 85%
$0.37#15337
"Whenever this Vehicle attacks, the next instant spell and the next sorcery spell you cast this turn each have cascade."
+1 more matching line
Kylox's Voltstrider 83%
$0.21#22218
"Whenever this Vehicle attacks, you may cast an instant or sorcery spell from among cards exiled with it. If that spell would be put into a graveyard, put it on the bottom of its owner's library instead."
+1 more matching line